package com.zhangwenqi.lease.web.admin.service.impl;

import com.zhangwenqi.lease.common.minio.MinioProperties;
import com.zhangwenqi.lease.web.admin.service.FileService;
import io.minio.*;
import io.minio.errors.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.multipart.MultipartFile;

import io.minio.MinioClient;
import io.minio.SetBucketPolicyArgs;
import java.io.IOException;
import java.security.InvalidKeyException;
import java.security.NoSuchAlgorithmException;

import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.UUID;

@Service
public class FileServiceImpl implements FileService {
    @Autowired
    private MinioClient minioClient;
    @Autowired
    private MinioProperties properties;
    @Override
    public String upload(MultipartFile file) throws ServerException, InsufficientDataException, ErrorResponseException, IOException, NoSuchAlgorithmException, InvalidKeyException, InvalidResponseException, XmlParserException, InternalException {

            boolean bucketExists = minioClient.bucketExists(
                    BucketExistsArgs.builder()
                            .bucket(properties.getBucketName())
                            .build());
            if(!bucketExists){
                minioClient.makeBucket(
                        MakeBucketArgs.builder()
                                .bucket(properties.getBucketName())
                                .build());
                minioClient.setBucketPolicy(
                        SetBucketPolicyArgs.builder()
                                .bucket(properties.getBucketName())
                                .config(createBucketPolicyConfig(properties.getBucketName()))
                                .build());
            }
            String filename = new SimpleDateFormat("yyyyMMdd").format(new Date()) +
                    "/" + UUID.randomUUID() + "-" + file.getOriginalFilename();
            minioClient.putObject(
                    PutObjectArgs.builder()
                            .bucket(properties.getBucketName())
                            .stream(file.getInputStream(),file.getSize(),-1)
                            .contentType(file.getContentType())
                            .object(filename)
                            .build());
            return String.join("/",properties.getEndpoint(),properties.getBucketName(),filename);
    }
    private String createBucketPolicyConfig(String bucketName) {

        return """
            {
              "Statement" : [ {
                "Action" : "s3:GetObject",
                "Effect" : "Allow",
                "Principal" : "*",
                "Resource" : "arn:aws:s3:::%s/*"
              } ],
              "Version" : "2012-10-17"
            }
            """.formatted(bucketName);
    }
}
